The radii of two concentric circles are 19 cm and 16 cm respectively. The area of the ring enclosed by these circles is

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KollegeApply · Accepted Answer

330 cm2 Let ; R = 19 cm and r = 16 cm Thus, we have ; Area of the ring = $\pi$(R2 - r2) = $\pi$ (R + r) (R - r) `= |$\frac{22}{7}$xx(19+16)xx(19-16)|"cm"^2 =($\frac{22}{7}$xx35xx3)"cm"^2` = 330 cm2

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